I used to have Discworld 2 for my Playstation and it was quite good fun - if somewhat infuriating. Eric Idle does the voice of Rincewind and you have to move him around various locations solving some really difficult puzzles.

Sometime back, around 1993/4, when I was in my first year at university one of my friends e-mailed Terry (at daemon . These were the early days of the web; Netscape, the first web browser, had only just come out. We were still using text only interfaces like Kermit and Gopher back then) about a rumoured Discworld game. If I remember correctly he wrote something along the lines of, "I hear you're bringing out a Compact Disk of Discworld?"
Amazingly, he got a reply: